Slide 1Earth Science Geologic Time Chapter 11 Slide 2 Historical notes Catastrophism Landscape developed by catastrophes James Ussher, mid-1600s, concluded Earth was only…
Slide 1 Geologic Time Slide 2 Figure 7.1 Slide 3 How Old is the Earth? Historical Records, written word –5000 years Bishop Usher (1664) 9:00 AM, Oct. 23, 4004 BC Earth…
Slide 1Radiometric Dating – geochronologic units Stratigraphic record can be subdivided according to a variety of criteria including lithology (lithostratigraphy), fossils…